I would like to monitor users to get an idea as to which LISP routines are being used in ACAD for cleanup and utilization purposes. It appears that VBA had a beginlisp event that could be used to handle this, but I can't seem to find any documentation on a similar event or its inclusion in vb.net. Has anyone found an event that could be used to accomplish this or have any suggestions? Note that I would like to monitor all LISP functions, not a single function. Thanks.